/**
 * Migration: 028 — telemetry_daily_metrics
 * Version: 28.0
 * Note: owner_id uses empty string for "global" bucket so UNIQUE(date, event_type, owner_id) works in SQLite.
 */
import type Database from 'better-sqlite3';
import type { Migration } from '../types.js';
export declare class TelemetryDailyMetricsMigration implements Migration {
    version: string;
    name: string;
    description: string;
    validateBefore(_db: Database.Database): Promise<void>;
    validateAfter(_db: Database.Database): Promise<void>;
    up(db: Database.Database): Promise<void>;
    down(db: Database.Database): Promise<void>;
}
export default TelemetryDailyMetricsMigration;
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